As mentionned above Earth Rings don't stay in their original plane . Hereunder is an animation which shows the inclination evolation in time as a function of distance from Earth . The timespan is about 350 years . Originally all particles were set at moons inclination ( 5°) . Moreover the LAN was set to the LAN of the moon . Due to perturbations the inclintions rise . It's no wonder that particles further away exhibit stronger perturbations .

What's more : even the LAN ( longitude of ascending node ) doesn't stay synchronised with the LAN of the moon . THe mmon itself has a LAN oscillation of about 18.6 years . The animation herunder shows the LAN variation in time . Originally all partickes had a LAN of about 355° .

If we combine all parameters it may be obvious that a ring structure around Earth evolves very quickly to a wavy cloud like structure .